/* Copyright 2013-2015 www.snakerflow.com.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.snaker.engine.core;

import org.snaker.engine.Completion;
import org.snaker.engine.DBAccess;
import org.snaker.engine.impl.GeneralCompletion;
import lombok.Data;

/**
 * 作为抽象父类，提供给子类access实现方式
 * 
 * @author yuqs
 * @since 1.0
 */
@Data
public abstract class AccessService {
    /**
     * 状态；活动状态
     */
    public static final Integer STATE_ACTIVE = 1;
    /**
     * 状态：结束状态
     */
    public static final Integer STATE_FINISH = 0;
    /**
     * 状态：终止状态
     */
    public static final Integer STATE_TERMINATION = 2;
    /**
     * 数据库的access
     */
    protected DBAccess access;
    /**
     * 完成触发接口
     */
    private Completion completion = null;

    /**
     * 获取DBAccess，供子类使用
     */
    public DBAccess access() {
        return access;
    }

    public Completion getCompletion() {
        if (completion != null) {
            return completion;
        }
        completion = ServiceContext.find(Completion.class);
        if (completion == null) {
            ServiceContext.put(Completion.class.getName(), GeneralCompletion.class);
            completion = ServiceContext.find(Completion.class);
        }
        return completion;
    }
}
